Eagle Chevy 4.8/5.3 LS 4.000in Crank 58 Tth Relctr 6.125in I-Beam 3.820in Pistons Rotating Assembly

This Eagle Pro Street rotating assembly gives you the core components to rebuild or upgrade your Chevy 4.8L or 5.3L LS engine. You get a 4.000-inch forged 4140 crankshaft, a 58-tooth reluctor wheel for crank trigger systems, 6.125-inch 4340 I-beam connecting rods fitted with 7/16-inch ARP 8740 bolts, and forged 4032 DSS flat-top pistons with a -5cc dish and a 3.820-inch bore size. It also includes plasma-moly file-fit piston rings and King XP rod and main bearings.

This assembly is built for naturally-aspirated racing applications, meaning it’s designed to handle the demands of high-RPM operation without forced induction. The forged 4140 crankshaft and 4340 I-beam connecting rods are strong choices for performance builds, offering improved durability over cast components. The included ARP bolts are well-known for their reliability in high-stress situations. The flat-top pistons are designed to work with the included reluctor wheel and are ready for file-fitting of the plasma-moly rings, which helps ensure a good seal between the piston and cylinder wall for optimal compression and oil control.

When rebuilding your LS engine with this rotating assembly, remember that the piston rings are file-fit, meaning they require careful measurement and adjustment to achieve the correct gap for your specific application. This is a standard practice for performance engine builds to ensure proper sealing and longevity. Please note that this assembly is not CARB approved and cannot be shipped to California.